I. Vim li cas AC tiv thaiv qhov ntsuas hluav taws xob?
Lub tshuab hluav taws xob stator windings tau raug hluav taws xob tsis tu ncua thaum ua haujlwm. Lawv yuav tsum tsis tsuas yog tiv taus qhov ntsuas hluav taws xob nkaus xwb tab sis kuj tiv taus cov hluav taws xob ib ntus, cov cua ntsawj ntshab (xws li xob laim), thiab cov tshuab hluav taws xob / cua sov los ntawm kev pib nquag- nres cycles.
DC vs AC Test:Thaum DC tiv thaiv cov cuab yeej siv tau yooj yim thiab muab cov ntaub ntawv xau tam sim no, nws tsis tuaj yeem sim ua qhov tseeb ntawm kev ua haujlwm ntawm lub tshuab hluav taws xob. Nyob rau hauv lub generator lub rwb thaiv tsev qauv, voltage yog faib raws li capacitance. Tsuas yog ib qho kev sim AC tuaj yeem sim simulate cov hluav taws xob kev ntxhov siab nyob rau hauv cov qhov thiab cov kab mob corona ntawm winding kawg.
Hauv qhov tseem ceeb, AC tiv thaiv kev xeem yog "kev kuaj zaum kawg" rau stator rwb thaiv tsev. Nws ua tau zoo qhia txog qhov tsis xws luag hauv cheeb tsam uas qhov kev sim DC yuav plam, xws li kev puas tsuaj ntawm cov rwb thaiv tsev thaum kawg - tig, tsis sib xws ntawm qhov chaw tawm, thiab cov kab nrib pleb hauv cov rwb thaiv tsev tseem ceeb.
II. Kev daws teeb meem niaj hnub: Kev hloov pauv zaus Series Resonance
Rau cov dej loj-generator lossis turbo-generators, qhov sib npaug capacitance (CC) ntawm stator winding yog loj (feem ntau ntawm 0.20.2 txog 1.0 μF1.0 μF lossis siab dua). Yog tias lub zog ib txwm siv- zaus hloov pauv hloov pauv, qhov yuav tsum tau them nyiaj inductance thiab lub peev xwm ntawm lub zog yuav loj heev, nrog rau cov khoom hnyav ntau tons.
CovVariable Frequency Series Resonant Systemdaws qhov kev sib tw engineering. Nws ua haujlwm ntawm lub hauv paus ntsiab lus ntawm resonance ntawm reactor's inductance (LL) thiab cov khoom kuaj lub peev xwm (CC): f=12πL⋅Cf=2πL⋅C1. Nyob rau hauv lub xeev resonant, lub hwj chim qhov chaw tsuas yog yuav tsum tau muab lub active zog poob ntawm lub Circuit Court los tsim high voltage thiab loj tam sim no {4}. Qhov no txo cov khoom ntim ntau dua 80% 80%. Tsis tas li ntawd, lub kaw lus muaj cov yam ntxwv ntawm "fault detuning" tus yam ntxwv: yog tias lub rwb thaiv tsev tawg, lub zog resonant raug rhuav tshem, ua rau tam sim no poob. Qhov no tiv thaiv lub tshuab hluav taws xob kim kim los ntawm kev puas tsuaj arc theem nrab.
III. Cov txheej txheem kuaj tseem ceeb
1. Kev Npaj (Kev tiv thaiv zoo dua li Kho)
Ua ntej ua qhov ntsuas AC tiv thaiv, cov hauv qab no yuav tsum tau ua ua ntej:
Rwb thaiv tsev Resistance thiab Polarization Index (IR/PI/DAR): Kev ntsuam xyuas yog txwv tsis pub yog tias IR tsawg dhau los yog cov cua ntws ntub dej.
DC Tiv Thaiv thiab Kev Ntsuas Tam Sim No: Cov no yuav tsum dhau los ua lub rooj vag ua ntej.
Environmental Control: Tus txheeb ze av noo yuav tsum qis dua 75% 75%, thiab qhov chaw winding yuav tsum huv thiab qhuav.
2. Kev ntsuas qhov ntsuas hluav taws xob
Raws li cov qauv xws liTIAB SA 95los yogwb 50150, cov qauv feem ntau yog:
Kev Xeem Xauv/Commissioning Test: Utest=(2Un+1000) VUtest=(2Un+1000) V
Kev Tiv Thaiv Kev Tiv Thaiv Kev Tiv Thaiv: Feem ntau 1.5Un1.5Un lossis raws li tau teev tseg los ntawm cov lej siv hluav taws xob hauv zos.
Piv txwv: Rau lub tshuab hluav taws xob uas muaj qhov ntsuas hluav taws xob ntawm 10.5 kV 10.5 kV, qhov kev ntsuas hluav taws xob feem ntau yog 22 kV 22 kV.
3. Voltage Boosting thiab saib xyuas
Pib los ntawm xoom thiab boost qhov voltage nyob rau theem (feem ntau ncua ntawm 1/31/3 thiab 2/32/3 ntawm lub hom phiaj voltage rau kev soj ntsuam).
Thaum qhov ntsuas hluav taws xob mus txog, tswj nws rau1 feeb 1 min. Lub sijhawm no, tus kws ua haujlwm yuav tsum saib xyuas lub ammeter thiab voltmeter ze thiab mloog cov suab nrov txawv txav hauv lub stator.
Ceeb toom:Yog hais tias qhov tam sim no nce sharply thaum lub sij hawm boost, los yog yog hais tias lub voltage dheev poob thiab tsis tuaj yeem rov qab tau, nws qhia tau hais tias muaj kev puas tsuaj ntawm rwb thaiv tsev. Qhov kev ntsuam xyuas yuav tsum raug tso tseg tam sim ntawd rau qhov kev ua txhaum hauv cheeb tsam (xws li, ntawm kev soj ntsuam corona lossis kev ntsuas qhov tso tawm ib nrab).
Lub Generator AC Withstand Voltage Test yog "siab-kev pheej hmoo, siab- khoom plig" txheej txheem. Txawm hais tias inherently ntxhov siab rau cov rwb thaiv tsev, nws tseem yog qhov kev txhim khu kev qha zoo tshaj plaws ua ntej lub tshuab hluav taws xob nkag mus rau kev pabcuam. Raws li cov kws tshaj lij hluav taws xob, peb yuav tsum tsis tsuas yog nrhiav cov ntaub ntawv meej xwb tab sis kuj tseem hwm cov txheej txheem kev nyab xeeb tom qab txhua qhov volt. Txhua qhov kev sim ua tau zoo yog qhov khoom plig siab tshaj plaws rau lub tshuab hluav taws xob kev noj qab haus huv.